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Question 114·Hard·Words in Context

Recent surveys of the island’s flora have documented a gradual uptick in the presence of Phalaris arundinacea. In her keynote address, Dr. Morales called the weed’s expansion “alarmingly metronomic,” emphasizing its relentless regularity. Some journalists, however, glossed over that qualifier, paraphrasing her as warning of a sudden explosion in growth—a characterization that is decidedly ______.

Which choice completes the text with the most logical and precise word or phrase?